Printing colors



Patented May 6, 1930 UNlTED STATES PATENT OFFICE, a

' KURT H. MEYER, or MANNHEIM, JOHANNES MULLER, or ni rsmiim, AND unnrcn norrmann, on LUIDWIGSHAFEN-ON-TI-IE-RI-IINE, GERMANY, nssrenons TO I. e.

PRINTIN G COLORS No Drawing. Application filed January 7,1928, Serial No. 245,259, and. in Germany January 7, 1927.

This invention relates to improvements in the production of printing colors, which ex-. pression is intended to include textile printing colors as well 'as copying and rotary printing colors, inks and the like, and carriers for such colors such as hectograph compositions,

coloring rollers used in 'printi g and the like.

We have found that excellent printing colors of the aforesaid nature are obtained by incorporating sorbitol which may also be em- "substances furnishes excellent carriers for such colors, in particular, hectograph compositions, coloring rollers for printing and the like.

In making up these preparations, sorbitol and its derivatives are usually employed in conjunction with a certain amount of water,

and it is possible to obtain solutions of any desired viscosity by varying the amount of water added. Acetyl sorbitol in particular has such excellent thickening properties that dyestuffs and coloring matters, and also such as could not hitherto be printed, for lack of suitable thickening agents, can, when incorporated with acetyl sorbitol, be printed on textiles with ease. Also'solutions or practically colloidal solutions of dyestuffs or coloring matters obtainable for example according to the process of U. S. Patent No. 1,589,- 700 may be printed on textiles when incorporated with acetylsorbitol. Very goodre sults are also obtained when acetyl sorbitol is employed in the usual process of calico I printing, for example with vat dyestufi's,'the

shades of the imprints obtained being deeper and clearer. Considerable improvements are with azo dyestuffs when .aoetyl sorbitol is added to the coloring matter.-

Sorbitol and its derivativeshave theeffectof bringing dyestuffs and coloring matters into solution or into such a fine state of dispersion, that they are in a practically col- ,loidal state. Because of this property very ,even .printings are obtained with such dyestuffs, especially on textile fabrics, and the said printings' often have a richer tone than those usually obtained.

On account of their hygroscopic properties, sorbitol and its derivatives are valuable constituents in the production of all sorts of inks, and in particular copying inks, stamp inks, hectograph inks and printers colors and inks as employed in the graphic industry and also in the production of carriers for such colors, in particular of hectograph compositions, coloring rollers for printing and the like. Such FRANKFORT-ON-THE-MAIN, GER- compositions always remain moist, and the transfer of dyestuffs or coloring matters from one body to another in the printing process is thus very much facilitated.

In the production of all of the aforementioned compositions, printing colors, both for the textile and graphic industry, inks andthe like, other substances having similar proper ties, such for example as glycol, glycerol, acetine, dextr-in'may be employed in conjunction with sorbitol or its derivatives.

Sorbitol and its derivatives moreover have the advantage of being readily available in The following examples will further illusany desired amount.

trate the nature ofthe said invention but the invention is not limited thereto. parts are by weight except where otherwise stated.v I

' Ewample .1

p d i a excellent or rubber tamp also observed in th p n g f woolen goods pads! The of dextrin and 2.5 5 parts "of water.

Ewample 2 An excellent ink for rubber pads is obtained by dissolving 10 parts of methyl violet B extra (highly concentrated brand) in a 5 solution of 35 parts of,,sorbitol, 55 parts of water and parts by volume of spirit.

The dehydration product of sorbitol ob "ta.inable according to the process of the aforesaid applicationfor patent Ser. No. 245,256 10 may also be employed in the above example in place of sorbitolwitli a like good result.

- Example 3 p A mixture of 10 parts of methyl '"violet B extra (highly concentrated brand) with/l5 parts of vsorbitol is dissolved in 45 parts of water and 10 parts by volume of spirit. An excellent ink for rubber stamp pads is thus obtained The dehydration product of sorbitol may allso be substituted for sorbitol as in Examp e 2. Ewample 4 A good ink for rubber stamp padsis obtained by dissolving a mixture of 10' parts ,of methyl violet B extra (highly concentrated H brand), 29 parts of sorbitol. 6 partsof mannitol'in 55 parts of water and 10 parts by 30 volume. of spirit.

In the above example parts of acetyl sorbitol may be eniployed in the place of sorbitol and mannitol.'

Ewwmple 5 v I An excellent hectographink is obtained by mixing 10 parts of methyl violet N bluish and 20 parts oi sorbitol with 5 parts of 6 Baum acetic acid and 1000 parts of water.

. 6 parts of inethcyl violet B extra (highly concentrated bran are dissolved in a solutionof 3 parts of dextrin, 5 parts of sorbitol, 2.5dpiirtsof acetic acid of 30 per cent strength arts of water. An excellent hectograph in' is thus obtained.

0 Acetyl sorbitol or the dehydration product of .sorbitol may be wholly or in part suba) stituted for sorbitol in the above example with a like -.g ood result.

V Example 7 v '-A printing copying ink is prepared by mix.-

ing 10 parts of {t 85 per cent solution of sor v bitol with 2 par of glycerol, and dissolving therein 0.1 part of zinc chlorid followed by 0.5 to-1 5 parts of-methyl violet N bluish. v I

.E 'wampZe 8 7' ing 2' parts of ethyl violetB extra (highly concentrated brand) in a solution of 5 parts parts of sorbitol in 100 A good copyil'li iig ink is obtained by dissol v- The sorbitol may bereplaced wholly or in part by thedehydration product thereof or by acetyl sorbitol with a like excellent result.

tained from a solution of 100 parts of gelatine and 400 parts of the aforementioned dehydrated sorbitol in 250 parts of water and 50 parts of glycol. I

Ema/mpZe. 11 p Equal parts of a scarlet lacquer obtainable from lithol fast scarlet RN (see Schultz- Farbstofitabellen 1914 No. 73) according to Example 4 ofthe U. S. Patent No. 1,589,700-

and acetyl sorbitol are incorporated with one another. The viscous composition thus obtained is printed on cotton, dried X andrinsed. A fast scarlet print is thus obtained. If in the above example indanthren blue 2GSL powder (Schultz-Farbstofitabellen 1914. No. 841) is employed in place of. lithol I fast scarlet, a clear blue print is obtained, while when lamp black is substituted a greyish black fast clear print is obtained.

Example 12 20 parts of a dyestufi, partsof acetylat'ed sorbitol and 50 parts of 6 Baum acetic acid are dissolved in 140 parts of water by warming the same. A color well adapted for printing textiles is obtained. The relative proportions of the substances used may be varied within wide limits. 'v

E'wample 13 with 150 parts of potash, parts of water, 100 parts of acetyl sorbitol, 600 parts of starch-British gum thickening and parts of sodium formaldehyde sulfoxylate. Calico goods are printed with this mixture in the usual way, and then steamed for 5 minutes ina Mather-Flatt apparatus. The goods are then rinsed and soaped in'the usual manner. Very clear imprints are obtained having a deep tone.

- Ewample 14 30 parts of an 'azo dyestufi dyeing from an acid bath are mixed with 50 parts of acetyl sorbitol, 250 parts of water, 650 parts of British gum thickening (1:1) and .20 parts ,of oxalic acid .or ammonium oxalate. Wool,-

lengoods are printed with this mixture, and

steamed for an hem without the application 100 parts of indanthrenblue GCD (Color Index 1924 No. 1113) dyestufi paste are mixed of pressure. On being rinsed beautiful clear prints are obtained having a deep tone.

What We claim is v v 1. As new compositions of matter print- 5 ing colors comprising a coloring matter and. sorbitol. V a p 2. As new compositions of matter carriers for printing colors comprising a gelatinous substance and sorbitol. K

3. As new compositions of matter prints ing colors comprising a coloring matter,

sorbitol and a thickening agent.

4; As new compositions of matter print- 1 ing colors comprising a vat dyestufl, sorbitol, a thickening agent and a reducing agent.

5. As new compositions of matter printing colors comprising a vat dyestuif, sorbitol, a thickening agent and-sodium formaldehyde sulfoxylatm In testimony whereof we have hereuntoset our hands.

KURT H. MEYER.

JOHANNES MULLER.

ULRICH HOFFMANN. 

